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基于模糊分析法道桥工程中桥桩基的施工安全评价研究

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中国高新科技 2024年第9期 125-127页

作者：李兴剑王利刚张建桥冯张伟云南建设基础设施投资股份有限公司云南昆明650500 云南省建设投资控股集团有限公司云南昆明650501

路桥工程中桥桩基施工安全是工程管理的重要组成部分,现阶段对其进行安全评价多采用经验法。文章利用模糊分析的方式对其进行定量分析,有助于对安全管理体系进行有效评价,从而找到确定的安全隐患,为保障施工质量与施工安全提供重要基础。

关键词：模糊分析法桥桩基施工安全评价

Numerical Simulation on Temperature and Microstructure during Quenching Process of Large-sized AISI P20 Steel Die Blocks

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材料热处理学报 2004年第5B期25卷 740-745页

作者： SONGDong-li GUJian-feng zhangwei-min LIUYang PANJian-sheng DepartmentofMaterialsScienceandEngineering ShanghaiJiaoTong-Universityshanghai＇China

In this paper, a model of coupled thermal and phase transformation is described. The temperature and microstructure during the quenching process for large-sized AISI P20 steel die blocks have been simulated using the finite element method (FEM). The optimum quenching technology of large-sized AISI P20 steel die blocks has been proposed based on the simulation results, which not only can effectively avoid quenching cracks and obtain deeper hardened depth, but also can improve the microstructure and properties of the large-sized die blocks.

关键词：淬火有限元数字模拟显微结构 AISI P20钢

Clinical and pathological characteristics of septum pellucidum tumor and choice of surgical approaches for its resection

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Chinese Medical Journal 2005年第10期118卷 812-816页

作者： WANGLei ZHANGMao-zhi zhangwei ZHAOShang-feng ZHAOJi-zong JIAJin-xiu DepartmentofNeurosurgery TiantanHospitalBeijing100050China

Background Tumor involving the septum pellucidum is uncommon. Surgery as the main therapeutic procedure for this lesion is a challenge to neurosurgeons. We analyzed the clinical characteristics and pathological features of septum pellucidum tumor in 41 patients and compared the curative effects of frontal transcortical, trans-sulcal and interhemispheric transcallosal approaches. Methods Clinical characteristics and the pathological features of septum pellucidum tumor were investigated retrospectively in 41 patients. The differences in postoperative residual rates, extents of tumors and resection of normal brain tissues after use of the three approaches in these patients were analyzed statistically. Results Septum pellucidum tumor is more likely to attack young or middle-aged persons. The tumor mainly presents itself as a central neurocytoma or cerebral low-grade glioma in pathology and manifests as intracranial hypertension clinically. No difference was found in the extent of tumor resection but significant difference in the extent of normal brain tissue resection and in postoperative disability rate among the three approaches. The transcortical approach brought about the most serious injury to brain tissue and the highest disability rate, Whereas the frontal transcallosal approach the lightest injury and the lowest disability rate. The injury to brain tissue and the disability rate brought about by the front trans-sulcus approach were between the above two approaches. Conclusions Operation is still regarded the major treatment for septum pellucidum tumor. Transcallosal and trans-sulcus approaches are fit with the concept of minimally invasive surgery, and transcallosal approach is the first choice for septum pellucidum tumor.

关键词： septum pellucidum intracranial tumor central neurocytoma surgery minimal invasion

Evolutionary Stable Strategies for Supply Chains: Selfishness,Fairness, and Altruism

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Journal of Systems Science and Information 2018年第6期9卷 532-551页

作者： Caichun CHAI Hailong ZHU zhangwei feng Institute of Game Behavior and Operations Management Nanjing University of Finance and Economics Institute of Applied Mathematics Anhui University of Finance and Economics School of Engineering and Management Nanjing University

The management strategies of a firm are inevitable affected by individual behavior preferences. The effect of individual preference on the evolutionary dynamics for supply chains is studied by employing replicator dynamics. Each firm has three behavior preferences: selfishness, fairness, and altruism. Firstly, the case that the strategy set of manufacturers and retailers including two pure strategies is considered and the effect of preference parameter on the equilibrium outcome in the shortterm interaction is discussed. Secondly, the equilibrium state in the short-term is always disturbed because the change of the environment, firm’s structure, and so forth. Using the replicator dynamics,the evolutionary stable strategies of manufacturers and retailers in the long-term interaction are analyzed. Finally, the extend case that the strategy set of manufacturers and retailers include three pure strategies is investigated. These results are found that the strategy profile in which both manufacturer and retailer choose fairness or altruism, or one player chooses fair or altruistic strategy and the other player chooses selfish strategy may be evolutionary stable, the stability of these equilibria depends on the the preference parameters.

关键词： stability evolutionary stable strategy equilibrium preference

基于消费者质疑的不同成本类型绿色产品生态标签选择策略

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系统管理学报 2023年第6期32卷 1176-1189页

作者：杨德艳冯章伟余云龙江苏师范大学商学院江苏徐州221116 宁波大学商学院浙江宁波315211 常州大学商学院江苏常州213159

生态标签是制造商披露产品绿色质量信息的重要工具。信息不对称导致的消费者质疑行为成为影响制造商生态标签策略的关键要素。通过构建标签发起者、制造商和零售商之间的博弈模型,研究了基于消费者质疑的设计成本型和边际成本型绿色产... 详细信息

生态标签是制造商披露产品绿色质量信息的重要工具。信息不对称导致的消费者质疑行为成为影响制造商生态标签策略的关键要素。通过构建标签发起者、制造商和零售商之间的博弈模型,研究了基于消费者质疑的设计成本型和边际成本型绿色产品的生态标签策略及其差异性。结果表明,产品的生态标签策略依赖于成本类型。设计型产品侧重选择行业标签。对于边际型产品,当消费者质疑度较低时,政府标签是最优选择;当消费者质疑度较高时,行业标签是最优选择。政府标签下的绿色度、批发/零售价格和促销努力程度均高于行业标签。对于零售商利润、消费者剩余和社会福利而言,政府标签优于行业标签。对于制造商的产品类型选择而言,当绿色创新成本预算较高时,选择设计型产品更为有利;而当成本预算较低或成本预算有约束时,边际型产品为较优选择。

关键词：消费者质疑行为生态标签策略成本类型差异性博弈

考虑绿色偏好和政府补贴/碳税的第三方再制造模式

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运筹与管理 2023年第8期32卷 57-64页

作者：冯章伟肖条军牟善栋宁波大学商学院浙江宁波315211 南京大学工程管理学院行为决策与控制实验中心江苏南京210093 中央财经大学商学院北京100081

现实中,各国政府对再制造产品的生产进行财政补贴或征收碳税。基于此,本文构建了由单一制造商、零售商和第三方再制造商组成的闭环供应链,制造商是领导者并选择外包或授权模式,分析政府补贴/碳税机制对闭环供应链决策、第三方再制造模... 详细信息

现实中,各国政府对再制造产品的生产进行财政补贴或征收碳税。基于此,本文构建了由单一制造商、零售商和第三方再制造商组成的闭环供应链,制造商是领导者并选择外包或授权模式,分析政府补贴/碳税机制对闭环供应链决策、第三方再制造模式选择、消费者剩余和社会福利的影响。研究发现:(1)在外包模式下,虽然第三方再制造商在政府采取补贴机制时利润很少,但补贴机制有效地增加了零售商的利润;第三方再制造商在政府采取碳税机制时无利可图,不会参与再制造。(2)在授权模式下,制造商在政府采取补贴机制时利润最大,且此时与第三方再制造商是一种双赢的状态,但零售商和政府均受益较小;在政府采取碳税机制时,闭环供应链各成员和政府能达到多赢的局面。

关键词：再制造第三方再制造模式政府补贴/碳税绿色消费博弈论

Plant Antifreeze Proteins and Their Expression Regulatory Mechanism

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Forestry Studies in China 2005年第1期7卷 46-52页

作者： LinYuan-zhen LinShan-zhi ZhangZhi-yi zhangwei LiuWen-feng KeyLaboratoryforGeneticsandBreedinginForestTreesandOrnamentalPlants MinistryofEducationBeijingForestryUniversityBeijing100083P.R.China

Low temperature is one of the major limiting environmental factors which constitutes the growth, development, productivity and distribution of plants. Over the past several years, the proteins and genes associated with freezing resistance of plants have been widely studied. The recent progress of domestic and foreign research on plant antifreeze proteins and the identifica- tion and characterization of plant antifreeze protein genes, especially on expression regulatory mechanism of plant antifreeze proteins are reviewed in this paper. Finally, some unsolved problems and the trend of research in physiological functions and gene expression regulatory mechanism of plant antifreeze proteins are discussed.

关键词： plant antifreeze proteins thermal hysteresis activity freezing-resistant mechanism expression regulatory mecha- nism

Recent Achievement of Gas Electron Multiplier

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Semiconductor Photonics and Technology 2004年第1期10卷 62-67页

作者： WANGLin XIAYi-ben WANGLin-jun ZHANGMing-long YANGYing zhangwei-li RUANJian-feng SchoolofMater.Sci.andEng. ShanghaiUniversityShanghai201800CHN

Gas electron multiplier (GEM) as a novel gas detector,due to it’s simple structure,high performance,well compatibility etc.,is widely used in high-energy physics,nuclear physics and other *** this review,the principl... 详细信息

关键词： GEM 气体电子倍增器检测器 MSGC 微波传输带气体室高能物理

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制造业对外直接投资与全球价值链地位升级

中国科技论坛 2018年第8期 76-82,91页

作者：罗军冯章伟温州大学商学院浙江温州325035 中国农业银行赣州崇义支行江西赣州341000

本文理论分析了对外直接投资影响全球价值链地位的机制,实证研究了对外直接投资影响中国制造业全球价值链竞争力的直接效应和提升制造业全球价值链地位的具体机制。结果发现:第一,对外直接投资通过技术进步和服务创新两条路径促进中国... 详细信息

本文理论分析了对外直接投资影响全球价值链地位的机制,实证研究了对外直接投资影响中国制造业全球价值链竞争力的直接效应和提升制造业全球价值链地位的具体机制。结果发现:第一,对外直接投资通过技术进步和服务创新两条路径促进中国总体制造业全球价值链地位升级;第二,不同要素密集度制造业都可以通过对外直接投资提升全球价值链竞争力;第三,资本密集型制造业和资本技术密集型制造业可以通过对外直接投资的技术进步效应促进全球价值链地位升级;第四,不同要素密集度制造业都可以通过对外直接投资的服务创新效应促进全球价值链地位升级。

关键词：制造业对外直接投资全球价值链升级